Welt grooving and beveling machine.



J. A. MACKEY. WELT GROOVING AND BEVELING MACHINE.

APPLICATION FILED MAR. 5. 9H. 1,286,696. Patented Dec. 3, 1918. 2 SHEETS-SHEET 1.

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J. A. MACKEY;

WELT GRO'OVING AND BEVELING MACHINE.

APPLICATION FILED MAR. s. 1911.

Patented Dec. 3, 1918.-

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i JAY;,A. MAGKEYQOF LYNN, MASSACHUSETTS, Assreavon 'ro, HAMEL srron MACHINERY CQZIl/LIPANIY, OFLYN'N, MASSACHUSETTS, A CORPORATION. OF MASSACHUSETTS.

WELT enoovr ve AND Bnv'nLINe MACHINE.-

To allwhomz't may concern":

Beit known that I, JAY-A. MACKEX, a citizen ofithe United States, and resident of Lynn, county; ofr-Es'sex, Gommonwealth of Massachusetts, have invented an Improve ment in Welt Groovingand Beveling Machines, of *which' the following description,

in connection with the accompanying "drawings, isgaspecification, like characters on the drawings representing like parts in each of V the several views.

This invention .relates to Jmechanism for Operating on. welt strips such'as used for example" in the Goodyear welt system "of shoe'manufacture to produce a groove therein for the stitching line and also to bevel the :edge thereofn One'prime object of the invention is "to provide-improved means for producing rapidly and accurately a continuous groove inone'side 'ofthe Welt, such means'having provision for assuring aperfectly uniform sewing thickness from the bottombf such groove tov the other side of the welt regardlessof variations in the'thickness of the welt strip. In carrying out this feature of the invention I preferably providea grooving knife held in rigid and unyielding adjustment with. no springs or like resilient aelementsiinthe mounting, and also provide accurate guiding means for the welt strip adapted to ,hold it in precise alinement.

and'correctop'erativeirelation with the groovingzknife as it passes through the machine. A

further:obj ect isato .provide improved means I for" effecting a quick ad ustment of the feed and: advantages of the invention Will vmore fully appear from [the following detailed description, andathe distinctive features of novelty will be pointed f out in. the appended claims. i i

Referring to: the drawings: I

Figure :1 .is a side elevation 10f a machme embodying the {features of mly invention,

: 1' Specifica tion of Letters latent. Application filed lfiarch e, 1917. Serial No. 152,881.

with a portionofthe driving connection broken away; 1

Fig. 2-is a plan viewof the'machine with a feed roll and the headbearing the grooving knife brokenaway;

Fig.3 is a sideelevation looking from the right in Fig. 1;

Fig. 4 is a detail'showing the grooving knife and its mounting removed; and

Fig. 5 is'a detail showing the mounting of the beveling knife.

The operative elements ofthe machine are mounted on a suitable base or pedestal 1 having an upright post 2 constituting a support for the feed wheel 3. This feed Wheel which is formed with ratchet feed teeth 4: is fixed at the inner end of a shaft 5 suit ably driven, preferably by a pulley (not shown) at the outer end thereof. This shaft is fitted'in a bearing sleeve 6 ha ving a depending shank 7 fitted for vertical slidingj adjustment in theupright'2, such adjustment being preferably eflected'by a turn buckle 8 having reversely threaded pr0jections 9, 10 fitted in the shank 7 and in the upright 2 respectively. For clamping the feed wheel mounting, rigidly and securely in position as thus adjusted, a clamping screw'll may be fitted transversely into-the upright 2 to engage the shank '7, this screw having as shown a squared projecting end tobe engaged-by a wrench or like operatingztool. The upright 2 alsoconstitutes amounting for an idler roll '12 mounted oppositethe feed roll 3, Itheupright having for this purpose a laterally extending bearing boss 13 to which the roll12 is fitted as by a pivot stud 14. At the top of the upright 2 a block 15 is fitted for adjustment length wise of the feed Wheel face, having'for this purpose a shank 16 slidably fitted in the top of the upright 2 and adapted to be clamped in adjusted position by a set screw 17. a The block" 15 is of considerable width as best seen in Fig. 2, having a portion 15 that projects laterally underneath the feed wheel 3, this blockintersecting the lower portion of the feed wheel. and being recessed as seen at 18 to afford clearance for the feed wheel Patented nec.-3,,191s.--

which extends down into a recess 19 extendguide passage for the weltistrip under operation. Thelower portion of theiblock' 1'5 screw 23-fitted into the upright 21 and passis alsorecessed to afford clearance for the y roll 12', which is mounted so that the top thereof is flush with the bottom of the guide passage 19 as'seen at 20. Itwill'thusbe observedlthat the feed wheel 3 may be adjusted by means of the turn buckle 8 so as to extend downward agreater or less distance into the guide passage 19 to space it vaccurately-from the bottom of thepassage 19 and the idler roll 12-iaccordingto the thickness of the welt strip being treated.

- At the other side of thebase 1 from the upright 2 is another upright 21 constituting a. supportand mounting forthe grooving and beveling knives. 'At the top of thev up-j right 21 a block 22 ismounted' for adjustment toward and from the welt passage and is clamped in adjusted position by a clamp vide adjusting clearance therefor and the inner end of the block 22, constitutes the outer side Wall of the guide passage 19 as indicated at 22 At the inner end portion of this block 22 is mounted a beveling knife 25,'this being diagonally fitted in a knife holder 26 adjustably clamped to the block 22by means of a clamp bolt 27 passing through an elongated slot 28 in the block. The inner operating end of the beveling knife 25 thus projects diagonally from the lower corner oftheend -22 ofthe block 22 and is held rigid and secure in its adjusted position by said block and its auxiliary clamping" block 26 whereby accuracy :and uniformity in the bevel cut is insured, it

being particularly noted that the block 22 which thus const tutes a support and backing for the beveling knife is of substantial dimension and held'in fits seat in the top of the upright '21 in a manner to preclude any possibility of chattering orlooseness. For mounting the grooving knife the upright 21 has afurther upward extension'29 equipped with a vertical slide way 30 in which is fitted an upwardly extending shank 31 of a bearing sleeve 32 in which is fitted a stud mounting 33 for the grooving knife. The bearing sleeve 32 is vertically adjustable by means of an adjusting screw 34? threaded into the shank 31 thereof and swiveled at 35 in the top of the eXtension29 this screw having a suitable knurled operating head 36. For clamping the bearing sleeve-32 in adjusted position a clamp bolt 37 may be passed through an elongated slot38 of the shank 31 into the extension '29. For turningthe mounting stud-33 to adjust thegrooving knife an'gularly the bearing sleeve 32 may be slotted as seen at 39 and a clamp bolt 40 i passed through projecting earsal thereof to clamping securely the "stud 33--- The stud 33 has fixed at its inner end the grooving knife diagonally atsome little angle to the vertispring said sleeve to'the requisite extent for 42 which has its main portion extending cal and itsv lower end bent to constitute a ment of this kind, the wearing away of the knife as it is ground can be compensated for;

and the cutting edge 43-v held securely and quired into the guide passage 19' to producev a grooveof the desired depth. It:will fur-.. ther .be-noted that by a small. angular adjust rigidly at a uniform or a desired distance at all timesfrom the bottom of the guide passage 19, thus insuring the production of a groove the bottom of which is always a precisely uniform thickness from the bottom or other side of thewelt. Suitable means may be provided for diverting the shaving produced by the grooving knife. For this purpose I show'an angularly mounted guide plate or member 44 ad'justably clamped to the base by a clamp bolt lea-passingthrough an elongated-slot 16 in a horizontallysextend ing portion of: said member whereby said guide member: may be adjusted with refer ence to the path of movement of :the welt] strip'as required. It may now be faceuof the feed'wheel-3as required by the understood "that the guide Way or passage 19 for the welt strip maybe set in adjusted positi'cnlengthwise of the adjustment of the shank 16 as .deSjIlbQd in I itsslide in the top' of the upright 2."

Also that the block 22 may be adjustably set in its slide way in the top of the upright 21 sents the'guide face 22*- 'correctlypositioned with reference tothe guide passage 19 aca described in the outer P6 011 of the block"v if 22 is held-rigidly and securely; though with a capability of easy adjustment, so as to.

make a perfectly uniform bevel inthe welt, to .the extent desired. Also that the grooving "knife 42 may be readily"'positioned'ibyangular adjustment of thestud .33 so jasto cause its cuttingedge 43 to project into the welt' passage 19 to the" required "extent for producing the desired depth of groove; such;

depth of groove being always uniformwith' reference to the other side of the Welt to "de termine a uniformsewing thickness, since of course the other side or back'ofthefweltis-i the stud 33. endwise in the clamp sleeve 32.

It will also be noted that the feed wheel 3 may be quickly adjusted vertically to properly cooperate with different thicknesses of welting by merely turning the turn buckle 8 to the required extent. I Thus all operative parts of the described meLhaniSm are rigidly and securely mounted and held without the use of any springs or other resilient elements in the machine, that would tend to cause uncertainty and unevenness in operation. I am aware that the invention in its various features may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered illustrative and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

Having described my invention, What I claim as new and desire to secure by Letters Patent is: 1 v

1. A machine of the kind described, comprising a guide way for a welt strip, feeding means mounted in operative relation thereto and equippedwith provision for adj ustmentto engage difierent thicknesses of welts. means for positively and definitely adjusting said guide way transversely of the direction of feed, and a grooving cutter fixedly mounted for positive adjustment and extending into said guide way to act on a welt passing therethrough.

2. A machine of the kind described, comprising an inclosed guide way for a welt strip, a "grooving knife fixedly 'mounted in operative relation thereto, a feed wheel mounted to engage a welt in said guide way, and means for positively adjusting said wheel to position it for different thicknesses of Welts.

3. A machine of the kind described, com.- prising an inclosed guide way for a welt strip having one portion thereof constituting the bottom and one side thereof, and an other portion constituting an opposite side thereof, said second portion of said guide way mounted and equipped for positive adjustment transverse of the direction of Welt feed and having a beveling knife fixed thereto.

4. A machine of the kind described, comprising a guide way for a welt strip composed of two parts, one thereof constituting a base and one side wall, and the other thereof constituting another side wall and mounted and equipped for adjustment relative to the first part and having a cutter fixed therein. i

5. A machine of the kind described, comprising a base, a guide Way formed in two transverse parts and each adjustable on said base, one of said parts constituting the bottom, one side wall and top of such guide way and the other part constituting the other side wall thereof and equipped with a beveling knife, and feeding means cooperatively mounted with respect to such guide way for advancing the welt strip therethrough.

6. A mathine of the kind described, comprising a block formed with a recess to constitute the bottom and one side of a guide Way fora welt strip, feeding means associated therewith, and a support bearing a beveling knife mounted for adjustment with reference to said recess and constituting a welt guide at the other side thereof.

In testimony whereof I have signed my name to this specification.

JAY A. MACKEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). C." 

